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From 68108d95040732cebf06296affaaeaaf76029c3d Mon Sep 17 00:00:00 2001
From: mokopatches <mokopatches@openmoko.org>
Date: Wed, 16 Jul 2008 14:44:50 +0100
Subject: [PATCH] s3c24xx-nand-largepage.patch
MTD: S3C24XX large page NAND support
This adds support for using large page NAND devices
with the S3C24XX NAND controller. This also adds the
file Documentation/arm/Samsung-S3C24XX/NAND.txt to
describe the differences.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---
drivers/mtd/nand/s3c2410.c | 28 ++++++++++++++++++++++++++++
1 files changed, 28 insertions(+), 0 deletions(-)
diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c
index cd2e1da..6e7a5b9 100644
--- a/drivers/mtd/nand/s3c2410.c
+++ b/drivers/mtd/nand/s3c2410.c
@@ -726,6 +726,34 @@ static void s3c2410_nand_update_chip(struct s3c2410_nand_info *info,
}
}
+/* s3c2410_nand_update_chip
+ *
+ * post-probe chip update, to change any items, such as the
+ * layout for large page nand
+ */
+
+static void s3c2410_nand_update_chip(struct s3c2410_nand_info *info,
+ struct s3c2410_nand_mtd *nmtd)
+{
+ struct nand_chip *chip = &nmtd->chip;
+
+ printk("%s: chip %p: %d\n", __func__, chip, chip->page_shift);
+
+ if (hardware_ecc) {
+ /* change the behaviour depending on wether we are using
+ * the large or small page nand device */
+
+ if (chip->page_shift > 10) {
+ chip->ecc.size = 256;
+ chip->ecc.bytes = 3;
+ } else {
+ chip->ecc.size = 512;
+ chip->ecc.bytes = 3;
+ chip->ecc.layout = &nand_hw_eccoob;
+ }
+ }
+}
+
/* s3c2410_nand_probe
*
* called by device layer when it finds a device matching
--
1.5.6.3
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